BuildQuantio
Free tools for planning your next purchase.

Estimate outputs: Area, Area with allowance, Whole pavers. Adjust Length, Width, Paver length to match your project.

Inputs and units

Use the units shown beside each field. Replace the sample values with your measurements and the figures on the selected product packaging.

ParameterExample input
Length8 m
Width4 m
Paver length20 cm
Paver width10 cm
Waste allowance7 %

Formula and assumptions

Whole pavers
ceil(Length × Width × (1 + Waste allowance / 100) / (Paver length × Paver width / 10000))

ceil = round up; floor = round down; max = the greater value. Trigonometric angles are converted from degrees to radians.

Allowance is applied before rounding to whole packages. Whole units are rounded up; displayed decimals are rounded only for readability.

Bulk density and compaction vary with moisture and the delivered material. The allowance does not model compaction; obtain the ordering conversion from your supplier.

Worked example

Sample values are examples, not product specifications. Run the calculation again with your own measurements.

ResultCalculation
Area32 m²
Area with allowance34.24 m²
Whole pavers1,712

Related calculators

Related tools use separate measurements. Check their inputs before transferring quantities.

Before ordering

These are quantity estimates. Confirm product coverage, site conditions and required dimensions before ordering.